High Precision Voltage Regulation Circuit for Multi-Level Flash Memory Programming

摘要

The voltage regulating circuit 45 includes a sampling and holding circuit 501 for sampling the input voltage V _in . The sampling and holding circuit 501 includes a capacitor C1 515 for maintaining a reference voltage. The voltage regulation circuit 45 also includes a regulator circuit 503 coupled to the capacitor C1 of the sampling and holding circuit 501. The regulator circuit 503 outputs the output voltage using the reference voltage supplied by the capacitor C1. The voltage regulation circuit 45 may be used to provide a high precision programming voltage for programming memory cells having two or more analog states.